Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

J. Y. Zhang; G. Yang; S. G. Wang; J. L. Liu; R. M. Wang; E. Amsellem; A. Kohn; G. H. Yu

doi:10.1063/1.4918372

Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

J. Y. Zhang, G. Yang, S. G. Wang, J. L. Liu, R. M. Wang, E. Amsellem, A. Kohn, G. H. Yu

Department of Materials Engineering

Ben-Gurion University of the Negev

Research output: Contribution to journal › Article › peer-review

Abstract

Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]₄/NiO/[Co/Pt]₄ has been tuned by functional CoO layers, where [Pt/Co]₄ multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69900% and saturation Hall resistance (R_S^P) up to 2590 mΩ were obtained in CoO/[Pt/Co]₄/NiO/[Co/Pt]₄/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]₄ multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.

Original language	American English
Article number	152401
Journal	Applied Physics Letters
Volume	106
Issue number	15
DOIs	https://doi.org/10.1063/1.4918372
State	Published - 13 Apr 2015

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4918372

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title = "Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance",

abstract = "Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]4/NiO/[Co/Pt]4 has been tuned by functional CoO layers, where [Pt/Co]4 multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69900% and saturation Hall resistance (RSP) up to 2590 mΩ were obtained in CoO/[Pt/Co]4/NiO/[Co/Pt]4/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]4 multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.",

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T1 - Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

AU - Zhang, J. Y.

AU - Yang, G.

AU - Wang, S. G.

AU - Liu, J. L.

AU - Wang, R. M.

AU - Amsellem, E.

AU - Kohn, A.

AU - Yu, G. H.

PY - 2015/4/13

Y1 - 2015/4/13

N2 - Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]4/NiO/[Co/Pt]4 has been tuned by functional CoO layers, where [Pt/Co]4 multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69900% and saturation Hall resistance (RSP) up to 2590 mΩ were obtained in CoO/[Pt/Co]4/NiO/[Co/Pt]4/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]4 multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.

AB - Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]4/NiO/[Co/Pt]4 has been tuned by functional CoO layers, where [Pt/Co]4 multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69900% and saturation Hall resistance (RSP) up to 2590 mΩ were obtained in CoO/[Pt/Co]4/NiO/[Co/Pt]4/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]4 multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.

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DO - 10.1063/1.4918372

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Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance

Abstract

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